Q: What are the prime factors of the number 23,622,144?

 A: 2, 3, 7, 13

Why are those the prime factors of the number 23,622,144?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 23,622,144

23,622,144
Factor Arrows
211,811,072
Factor Arrows
25,905,536
Factor Arrows
22,952,768
Factor Arrows
21,476,384
Factor Arrows
2738,192
Factor Arrows
2369,096
Factor Arrows
2184,548
Factor Arrows
292,274
Factor Arrows
246,137
Factor Arrows
315,379
Factor Arrows
72,197
Factor Arrows
13169
Factor Arrows
1313

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 13 x 13 x 13 = 23,622,144

This can also be written as 29 x 31 x 71 x 133 = 23,622,144

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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